Chinese Premier Wen Jiabao Thursday called on the international community to keep alert on the dangerous move by the Taiwan authorities to cease the functioning of the "National Unification Council" and application of the "National Unification Guidelines".

The move is a grave provocation against the one-China principle widely observed by the international community and will undermine the peace and stability across the Taiwan Straits, said Wen over a phone conversation with German Chancellor Angela Merkel.

The German government firmly adheres to the one-China policy and is worried about the move, said Merkel, hoping the Taiwan issue could be resolved peacefully in line with the one-China policy.

Taiwan leader Chen Shui-bian declared Monday afternoon to cease the functioning of the "National Unification Council" and application of the "National Unification Guidelines."